1-1 国土構成島数，面積及び主な島Islands, Area and Major Islands of National Land 「構成島数」及び「面積」参照。主な島は面積60平方キロメートル以上の島。面積は令和３年４月１日現在。構成島数面積地域DistrictIslandArea割合Percentage(km2)(%)全国Japan6,852377,976100.00北海道Hokkaido50983,42422.07本州Honshu3,194a)231,235a)61.18四国Shikoku626a)18,803a)4.97九州Kyushu2,16042,23011.17沖縄Okinawa3632,2830.60面積所在都道府県主な島Major islandsAreaPrefectural location (km2)1択捉島Etorofu Island3,166.6北海道Hokkaido2国後島Kunashiri Island1,489.3北海道Hokkaido3沖縄島Okinawa Island1,208.5沖縄Okinawa4佐渡島Sadoshima Island854.8新潟Niigata5奄美大島Amami-Oshima Island712.4鹿児島Kagoshima6対馬Tsushima Island695.7長崎Nagasaki7淡路島Awaji Island592.4兵庫Hyogo8天草下島Amakusa-Shimoshima Island575.0熊本Kumamoto9屋久島Yakushima Island504.3鹿児島Kagoshima10種子島Tanegashima Island444.3鹿児島Kagoshima11福江島Fukuejima Island326.4長崎Nagasaki12西表島Iriomote Island289.6沖縄Okinawa13徳之島Tokunoshima Island247.9鹿児島Kagoshima14色丹島Shikotan Island247.7北海道Hokkaido15島後Dogo Island241.5島根Shimane16天草上島Amakusa-Kamishima Island225.9熊本Kumamoto17石垣島Ishigaki Island222.2沖縄Okinawa18利尻島Rishirito Island182.1北海道Hokkaido19中通島Nakadorishima Island168.4長崎Nagasaki20平戸島Hiradoshima Island163.4長崎Nagasaki21宮古島Miyakojima Island158.9沖縄Okinawa22小豆島Shodoshima Island153.3香川Kagawa23奥尻島Okushirito Island142.7北海道Hokkaido24壱岐島Ikishima Island134.6長崎Nagasaki25屋代島Yashirojima Island128.5山口Yamaguchi26沖永良部島Okino-Erabujima Island93.7鹿児島Kagoshima27江田島・能美島Etajima, Nomijima Island91.3広島Hiroshima28大島Oshima Island90.7東京Tokyo29長島Nagashima Island90.7鹿児島Kagoshima30礼文島Rebunto Island81.3北海道Hokkaido31加計呂麻島Kakeromajima Island77.3鹿児島Kagoshima32倉橋島Kurahashijima Island69.5広島Hiroshima33八丈島Hachijojima Island69.1東京Tokyo34下甑島Shimo-Koshikishima Island65.6鹿児島Kagoshima35大三島Omishima Island64.6愛媛Ehimea) 地域の境界にまたがる境界未定の面積を含む。a) Including some areas which spread over districts and whose boundaries are not yet fixed.資料 国土交通省国土地理院「全国都道府県市区町村別面積調」 海上保安庁調べ Source: Geospatial Information Authority of Japan, Ministry of Land, Infrastructure, Transport and Tourism. Japan Coast Guard. See "Islands" and "Land area". Major islands represent those with area of 60 square kilometres or more. As of 1 April 2021.18 1 国土・気象
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